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// 3-d line and point plot demo. Adapted from x08c.c.
//
import std.math;
import std.string;
import plplot;
int[] opt = [ 1, 0, 1, 0 ];
PLFLT[] alt = [ 20.0, 35.0, 50.0, 65.0 ];
PLFLT[] az = [ 30.0, 40.0, 50.0, 60.0 ];
//--------------------------------------------------------------------------
// main
//
// Does a series of 3-d plots for a given data set, with different
// viewing options in each plot.
//--------------------------------------------------------------------------
int main( char[][] args )
{
const int npts = 1000;
// Parse and process command line arguments
plparseopts( args, PL_PARSE_FULL );
// Initialize plplot
plinit();
for ( int k = 0; k < 4; k++ )
test_poly( k );
PLFLT[] x = new PLFLT[npts];
PLFLT[] y = new PLFLT[npts];
PLFLT[] z = new PLFLT[npts];
// From the mind of a sick and twisted physicist...
PLFLT r;
for ( int i = 0; i < npts; i++ )
{
z[i] = -1. + 2. * i / npts;
// Pick one ...
// r = 1. - cast(PLFLT)i/npts;
r = z[i];
x[i] = r * cos( 2. * PI * 6. * i / npts );
y[i] = r * sin( 2. * PI * 6. * i / npts );
}
for ( int k = 0; k < 4; k++ )
{
pladv( 0 );
plvpor( 0.0, 1.0, 0.0, 0.9 );
plwind( -1.0, 1.0, -0.9, 1.1 );
plcol0( 1 );
plw3d( 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, alt[k], az[k] );
plbox3( "bnstu", "x axis", 0.0, 0,
"bnstu", "y axis", 0.0, 0,
"bcdmnstuv", "z axis", 0.0, 0 );
plcol0( 2 );
if ( opt[k] )
{
plline3( x, y, z );
}
else
{
// U+22C5 DOT OPERATOR.
plstring3( x, y, z, "⋅" );
}
plcol0( 3 );
plmtex( "t", 1.0, 0.5, 0.5, format( "#frPLplot Example 18 - Alt=%.0f, Az=%.0f", alt[k], az[k] ) );
}
plend();
return 0;
}
void test_poly( int k )
{
PLINT[][] draw = [ [ 1, 1, 1, 1 ],
[ 1, 0, 1, 0 ],
[ 0, 1, 0, 1 ],
[ 1, 1, 0, 0 ] ];
PLFLT[] x = new PLFLT[5];
PLFLT[] y = new PLFLT[5];
PLFLT[] z = new PLFLT[5];
pladv( 0 );
plvpor( 0.0, 1.0, 0.0, 0.9 );
plwind( -1.0, 1.0, -0.9, 1.1 );
plcol0( 1 );
plw3d( 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, alt[k], az[k] );
plbox3( "bnstu", "x axis", 0.0, 0,
"bnstu", "y axis", 0.0, 0,
"bcdmnstuv", "z axis", 0.0, 0 );
plcol0( 2 );
PLFLT theta( int a )
{
return 2 * PI * a / 20;
}
PLFLT phi( int a )
{
return PI * a / 20.1;
}
for ( int i = 0; i < 20; i++ )
{
for ( int j = 0; j < 20; j++ )
{
x[0] = sin( phi( j ) ) * cos( theta( i ) );
y[0] = sin( phi( j ) ) * sin( theta( i ) );
z[0] = cos( phi( j ) );
x[1] = sin( phi( j + 1 ) ) * cos( theta( i ) );
y[1] = sin( phi( j + 1 ) ) * sin( theta( i ) );
z[1] = cos( phi( j + 1 ) );
x[2] = sin( phi( j + 1 ) ) * cos( theta( i + 1 ) );
y[2] = sin( phi( j + 1 ) ) * sin( theta( i + 1 ) );
z[2] = cos( phi( j + 1 ) );
x[3] = sin( phi( j ) ) * cos( theta( i + 1 ) );
y[3] = sin( phi( j ) ) * sin( theta( i + 1 ) );
z[3] = cos( phi( j ) );
x[4] = sin( phi( j ) ) * cos( theta( i ) );
y[4] = sin( phi( j ) ) * sin( theta( i ) );
z[4] = cos( phi( j ) );
plpoly3( x, y, z, draw[k], 1 );
}
}
plcol0( 3 );
plmtex( "t", 1.0, 0.5, 0.5, "unit radius sphere" );
}
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